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© HAMILTON - JuNe 2016
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TELEMETER
Chronograph provided with a scale allowing measurement of a distance, by measuring the interval of time
between the observation of a phenomenon and the sound caused by it.
For example, measurement of how far away a thunderstorm is, by measuring the interval of time between the
lightning and the sound of the thunder.
Procedure
Start the chronograph when the lightning is observed and stop it when the sound of the thunder is heard.
The result is immediately readable on the scale.
example:
13 kilometers
Reset the chronograph.
